java转化json方式2，（需要json官方jar包支持）

import java.beans.IntrospectionException;import java.beans.Introspector;import java.beans.PropertyDescriptor;import java.util.List;public class JsonUtil {public static String objectToJson(Object object) {StringBuilder json = new StringBuilder();if (object == null) {json.append("\"\"");} else if (object instanceof String || object instanceof Integer) {json.append("\"").append(object.toString()).append("\"");} else {json.append(beanToJson(object));}return json.toString();}public static String beanToJson(Object bean) {StringBuilder json = new StringBuilder();json.append("{");PropertyDescriptor[] props = null;try {props = Introspector.getBeanInfo(bean.getClass(), Object.class).getPropertyDescriptors();} catch (IntrospectionException e) {}if (props != null) {for (int i = 0; i < props.length; i++) {try {String name = objectToJson(props[i].getName());String value = objectToJson(props[i].getReadMethod().invoke(bean));json.append(name);json.append(":");json.append(value);json.append(",");} catch (Exception e) {}}json.setCharAt(json.length() - 1, '}');} else {json.append("}");}return json.toString();}public static String listToJson(List<?> list) {StringBuilder json = new StringBuilder();json.append("[");if (list != null && list.size() > 0) {for (Object obj : list) {json.append(objectToJson(obj));json.append(",");}json.setCharAt(json.length() - 1, ']');} else {json.append("]");}return json.toString();}} <br />

<br />